Printing-press.



A. 1. SMITH.

PRINTING PRESS.

APPLICATION FILED mam, 1918.

1,286, 1 32. Patented Nov. 26,1918.

2 SHEETS-SHEET l- I l/VI/E/VTOR I A TTOR/VEYS A. J. SMITH.

PRINTING PRESS.

APPLICATION FILED AUG-31. I918.

1 ,286, 1 32. Patented Nov. 26, 1918.

2 SHEETSSHEET 2.

WI TNESSES IN VEN T01? 477617810 1 Smifh ,4 TTORA/EYS g1 AWENT @FFTCE.

ANDREW JOSEPH SMITH, OF NEW YORK, N. Y., ASSIGNOR TO SARAH R. CRAIG, OF NEW YORK, N. Y.

PRINTING-PRESS.

Specification of Letters Patent.

Patented Nov. 26, 1918.

Application filed August 31, 1918. Serial No. 252,159.

To all whom it may concern:

Be it known that I, ANDREW J. SMI'rH, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented new and useful I mprovements in Printing-Presses, of which the following is a full, clear, and exact description.

The object of the invention is to prov de certain new and useful improvements 1n printing presses wherelby static electrlcity incident to the operation of a printing press is dispelled or neutralized and an equal drying of the ink is obtalned without danger of igniting the paper. Another ob ect is to provide a \gas burner having a supply valve controlled by electromagnetic means controlled by the stopping and starting device of the printing press to turn on the gas supply. on starting the printing press and to automatica ly shut off the gas supply on stopping the printing press.

With these and other objects in view, the invention consists of certain novel features .of construction as hereinafter shown and described and then specifically pointed out in the claims. i A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is aside elevation of my improvements as applied to a printingpress, parts of which are shown in section;

Fig. 2 is an enlarged plan viewof the the printing press provided with my improvements; 3

Fig. 3 is an enlarged reanfelevatioif .of the gas burnerand the means'to control the flow of gas therethrough, the shield for the pilot light being shown in section.

Fig. 4 is an enlarged side elevation of the valve mechanism and supporting means thereof; Fig. 5 is an enlarged cross section of the same on the line 5-5 of Fig. 4;

Fig. 6 is a plan view of the same with the valve casing in section; and Fig. 7 is a side elevation of the electro-magnet employed to open the gas valve.

The printing press'lO of any approved construction is driven by an electric motor 11 connected by line wires 12 and 13 with a suitable source of electrical energy. An electric switch 14 under the control of an operator is connected with the line wires 12 and 13 to permit the operator to start and stop the motor 11 and consequently the printing press 10. The printing press is provided at its delivery end with a receiving table for receiving the printed sheets and this table 20 supports a pair of tracks 21 on which is mounted to reciprocate a carriage 22 actuated by a lever 23 or other suitable means forming part of the printing press. The carriage 20 includes a finger shaft 24 bearing a plurality of fingers 25 with which are associated sheet stops 26 and strip-per stops 27.

In order to dispel or neutralize the static electricity generated by the movement of the sheets through the press, use is made of a tubular gas burner 30 connected by clamps 31 or similar devices with the finger shaft 24 to reciprocate with the carriage 22. A

flexible tube 32 connects a suitable source of gas with a coupling 33 arranged on the gas valve 34 connected by a fitting 35 with an air mixer 36 from which leads a pipe 37 to one end of the gas burner 30 to supply the latter with a mixture of air and gas to be burned in jets under the paper for dispelling the static electricity and for drying ,the ink. main parts of the delivery mechanism of The valve casing 34 is provided with a valve seat 40 (see Fig. 6) normally closed by a valve 41 having a valve stem 42 pressed on by a spring 43 arranged within the valve casing 34. The valve stem 41 extends through a stufling box 44 to the outside of the valve casing 34, and on the outer end of the valve stem 42 is secured a shifting collar 45 engaged by a pin 46 projecting from an arm 47 fulcrumed at 48 on a bracket 49 attached to the fitting 35 to move with the reciprocating carriage 22. A heavy spring 50 is attached at one end to the bracket 49 and at the other end to the pin 46 to aid the spring 43 in holding the valve 41 normally to its bracket 49. One end of the flexible connection 61 is attached to a bracket 63 fastened to the rear' end of the receiving frame or bed 64, while the other end of the flexible connection 61 is attached to the upper end of an armature lever 65of an electromagnet 66 having its wires'67 and 68 connected with the line wires 12 and 13 of the electric motor 11. The electromagnet 66 and its armature lever 65 are mounted on a bracket 69 attached to the frame 64. W hen the motor 11 is not running then the armature lever 65 is in the position in'Fig. 7 and the Valve 41 is held in closed position by the action of the springs 48 and 50. When the motor 11 is started by correspondingly throwing in the position by the action of switch 14 then the electromagnet 66 is energized and imparts a swinging motion to the armature lever from the left to the right whereby a pull is exerted on-the flexible connection 61 to swing the arm 47 from the left to the right whereby the pin 46 acting .on the shifting collar 45 causes the valve 41 tomove into open positionthus allowing gas to pass to the burner. The gas is ignited by a suitable pilot light 70 connected by a pipe 71 with a tube 72 extending transversely through the valve casing cent the coupling 33, as plainly lndicated in Fig. 5. The tube 72 is provided with a port 73 controlled by an adjusting screw 74 to regulate the flow of gas passing directly from the casing 34 to the pilot light 70. An

annular shield 75 is mounted on the burner 30 at the pilot light 70 to protect the flame of the pilot light from contact with the paper or other inflammable material. -When the motor 11 is stopped by correspondingly manipulating the switch 14 then the electromagnet 66 becomes de'energized' and the valve 41 now moves immediately into closed the springs 43 and 50, thus shutting off the gas supply from {the burner 30. (hhe oscillating movement of the arm 47 is limited by stops 80 and 81 attached to the bracket 49 and extending at opposite sides ofthe pin 46, as plainly indi- It is; understood that when .the printing press is running and the carriage 22 reciprocates then the armature lever is held attracted by its electromagne't' 66 to hold the valve 41 in open position, it being under- Stood that the looping of the flexible connection 61 around the pulleys 60 and 62 permits the carriage to reciprocate freely irrespective of the length of the flexible connection 61 incident tothe movement of the armature lever 65. i

34 adjadelivery carriage,

Having thus described my invention, ll.-

press and provided with an electric switch to stop and start the motor, a'heating means adjacent the path of the paper passing through the press, and electromagnetic means controlled by the said switch and con-' trolling the said heating means to automati-' cally start the heating means on starting the motor and to automatically stop the heating means on stopping the motor. t

2. In a printing press, the combination of an electric motor for running the printing press and having an electric switch forl'starting and stopping the motor, adelivery carriage, a burner mounted on the said carriage and provided with agas supply valve and with a pilot light, and electromagnetic means con trolled by the said switch and connected with the said gas supply valve. I

3. In a printing press, the combination of an electric motor for running the printing press and provided with a switch, a burner 7 provided with a pilot light, means to supply fuel to the burner, a valve-controlling the flow of the fuel to the burner, and electro- ;magnetic means controlled by the said switch and connected with the saidvalve'to open the latter on starting the said motor and to close the valve on stopping the motor.

4.- In a printin'gpress, the combination or an electric motor for-running the printing press and provided with an electric switch to stop and start the motor, delivery carriage, a gas the said carriage I light, a gas valve controlling the flow of gas to the said burner, yided with an armature lever, and connectburner mounted on ing' means connecting the said armature lever with the said gas valve. I a 5-. In a printing press, the combination of an electric motor for running the printing a reciprocating and provided with a pilot 105. an electromagnet propress and provided with an electric switch to stop and start the motor, livery carriage, a gas burner mounted on the said carriage and provided with a pilot light, a gas valve controlling the flow oi" I gas to the said burner and provided witha a reciprocating devalve stem, a shifting collaron the said carriage, and a flexible connecan electric motor for running the printing press and provided with an electric switch to stop andstart the motor, areciprocating a gas burner mounted on the said carriage andprovided with a pilot light, a gas valve controlling the flow vof gas to the said burner and provided With a valve stem, a shifting collar on the said valve 5 stein, an arm pivoted on the said carriage and provided with a pin engaging the said collar, a pulley on the said'arm, a pulley on the said carriage, a flexible oonnection secured at one end to the said armature lever and fixed at the other end, the said flexible 10 connection passing around the said pulleys, and a spring for closing the said valve.

ANDREW JOSEPH SMITH. 

